The Keystone pipeline will likely remain shut down for the rest of the week while officials investigate an apparent oil spill in southeastern South Dakota.
Oil covered part of a farm field ditch four miles from a Freeman-area pump station, about 40 miles southwest of Sioux Falls.
About 100 workers are investigating where the oil came from and removing the contaminated soil.
Company spokesman Mark Cooper says no pipeline damage had been found as of yesterday.
(The Associated Press)